So I decided to re watch the season and count one by one the days that we see on screen to see how close the dates line up if we compress the episodes to run one after another. Where possible the end of one episode is the same day as the beginning of the next episode. To compress the timeline as brief as possible its assumed that THOR 2 Greenwich battle and AOS s1e07's end on the same day. As you can see we have 2 too many days. Or perhaps I missed something.
September 15, 2013
AOS s1e03 0:00:00 (its implied that Skye has been training for at least 1 day previous if not more) we can assume the first day was the same day that Fury was fixing the BUS at the end of the last episode.
September 16, 2013
AOS s1e03 0:08:40 Malta night scenes are considered to be part of this day since its 8 hours ahead of Colorado
September 17, 2013
AOS s1e03 0:20:29
AOS s1e04 0:00:00 Assumes Subway Diamond thief happens during the final events of the previous episode. This is not directly contradicted.
September 18, 2013
AOS s1e04 0:03:32 subway diamond thief events occurred "yesterday" possible 2nd day midway through episode as characters change clothes.
September 19, 2013
AOS s1e04 0:21:12 starts in the early am
September 20, 2013
AOS s1e04 0:40:43
AOS s1e05 0:00:00 Assumes Night in Hong Kong (could be on the same day as last of the previous episode
September 21, 2013
AOS s1e05 0:04:22 Morning on bus (kidnapped late last night)
September 22, 2013
AOS s1e05 0:19:40 Day in Austin to Day in Hong Kong transition to night in Hong Kong, sky gets the wrist band.
September 23, 2013
AOS s1e05 0:39:59 Daylight can be viewed on the wall
AOS s1e06 0:00:00 assumes Campout at night on the same day as the last part of the previous episode)
September 24, 2013
AOS s1e06 0:02:28 Morning on the bus after campout (its implied that its been at least a few days and Skye has been on good behavior)
September 25, 2013
AOS s1e06 0:19:38
September 26, 2013
AOS s1e07 0:00:00 Morning
September 27, 2013
AOS s1e07 0:26:07 Morning
Thor 2 battle
September 28, 2013
AOS s1e08 0:00:00 Implied that its been at least a couple days past Thor 2 since the pagan cult has been "growing since the incident in Greenwich" In reality this should likely be more than a day but the timeline doesnt allow for this.
September 29, 2013
Thor 2 breakfast credit scene/collector
AOS s1e08 0:35:46 Morning at church ends in hotel
September 30, 2013
AOS s1e09 0:00:00 Daytime in Utah
October 1, 2013
AOS s1e09 0:01:44 Morning in Ireland (ward implies that this is their second morning together) considering night time all part of this day
October 2, 2013
AOS s1e10 0:00:00 Morning at prison through sunset
October 3, 2013
AOS s1e10 0:18:40 Morning when Peterson comes out of room/bus till the middle of the night
October 5, 2013
AOS s1e11 0:00:00 "its been 36 hours since agent coulson was taken"
October 6, 2013
AOS s1e11 0:40:56 Peterson wakes up
AOS s1e12 0:00:00
October 7, 2013
AOS s1e12 0:27:30 Approximate time. Midnight is subjective. Ends during daytime
October 8, 2013
AOS s1e13 0:00:00 Coulson's intro. Assume the Italian agent flashback occurred on the previous day since coulson is telling the story in the morning and he met with the Italian during the daytime.
October 9, 2013
AOS s1e13 0:40:54 Mike Peterson in the morning
AOS s1e14 0:00:00
AOS s1e14 0:38:27 Sunset in Europe/Day in Death Valley
October 11, 2013
AOS s1e15 0:02:35 Day at the Hub (Europe presumably) (Coulson has taken personal time for "a couple days straight" To compress the time line I am assuming that one of those two days is today) bikers have also done 2 reported robberies
October 12, 2013
AOS s1e15 0:24:21 morning after ward sleeps with Loraine, ends at night
October 13, 2013
AOS s1e16 0:00:00 Morning, Sitwell leaves
October 11, 2014
Cap 2 0:00:00 Cap 2 begins